Completed the code for arbitrary rotation of a gnocl::pixBuf.

Finished adding the arbitrary rotation command. I had some issues but this wasn't incorporating the code, that was achieved earlier, but it was over wether or not to replace the buffer for the rotate object with a new buffer, or simply to create a new rotated buffer. In the end I settled for the latter choice. This would allow for any simple undo/redo operation under script control. The rotation is achieved using code taken from the zfuncs library from Kornelix -thanks. There is one option in the code that does the actual turn, acolor. The code comments don't make it abundantly clear what is happening but I provided support for it anyway. Its a nice fast routine, a much better alternative than using Imagick. Apart from rotation of colour information, the function also creates an alpha channel. Here's a snippet from the test script:

set pb5 [gnocl::pixBuf load "vyrnwy.png"] 

set pb6 [$pb5 rotate \ 

   -angle 30 \

   -aColor 255] 

gnocl::window \

   -child [gnocl::image \

   -image "%?$pb6"] -onDelete {exit}

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gnocl::calendar

Given this module some attention today. Added some of the more package wide options to the module and created customised handler for setting the month. (For some odd reason months are are counted 0-11 whereas days are 1-31.) There's still a little more to do to this one including the addition of code to store diary details. Here's the working test script to show the range of options at work. The percentage substitution string item %e explores something that I've been toying with, the name of the signal/event that initiated the call. Ok, a script can keep its own internal trace but who knows, it might prove useful. #--------------- # calendarTest.tcl #--------------- # Author: William J Giddings # Date: 07/05/09 #--------------- #!/bin/sh # the next line restarts using tclsh \ exec tclsh "$0" "$@" #--------------- package require Gnocl set cal [gnocl::calendar] $cal configure -day 8 -month 7 -year 1956 $cal configure -rowHeight 1 -colWidth 1 $ca

Gnocl Dashboard

Over the past few programming sessions I've been working on producing a central point, a dashboard, around which it's possible to see the various Gnocl widgets and commands in operation. In many ways like the demo script which shipped with the earlier releases of Gnocl but offers much more. The introspection functionality provides details of the various options and sub-commands of each Gnocl procedure which are displayed under the associated tab. Sample scripts are included for each item which offers newcomers a clearer insight into how make the most of what's on offer.

Creating a button box with right aligned widgets

The dialog widget has its own internal functionaluty to create and position buttons at the bottom right corner of the window container. When creating these for ourselves it must be born in mind that default settings for fill and expand are both 0.5. Failing to set these will always place the child objects in the centre, regardless of alignment. For most cases these defaults are acceptable but, to create that dialog-button arrangement, use the following snippet as a model! # to right align completely, set expand and fill to 0 set hbox [gnocl::hBox] set b1 [gnocl::button -text Select \ -data $lst -onClicked { puts DO-SOMETHING-WITH-%d} ] set b2 [gnocl::button -text Cancel -onClicked { puts DONE! } ] $vbox add $hbox -expand 0 -fill 0 -align right $hbox add $b1 $hbox add $b2

Gnocl -the Tcl/Gtk Bindings

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